We Finally Scoville Tested Our Hot Sauce. Things Got Weird.

We have a confession.

For more than 20 years, we’ve had our own way of telling you how hot an Aardvark sauce is: flames.

🔥 = friendly.
🔥🔥 = got a little kick.
🔥🔥🔥 = yep, that’s hot sauce.
🔥🔥🔥🔥 = you’ve been warned.

Simple. Useful. No math required.

And for most of that time, we’ve had a somewhat less scientific opinion about Scoville ratings:

They’re kinda dumb.

Okay, okay. Before the pepper scientists come for us, hear us out.

Scoville Heat Units absolutely measure something real. But we’ve never thought a single number does a particularly great job of telling you what you probably actually want to know:

How hot is this going to feel when I put it in my mouth?

Still, Scoville ratings have become increasingly mainstream in the hot sauce world. People know them. People ask about them. People compare sauces by them.

So, fine.

After two decades of flames, we sent Aardvark to the lab.

And when the results came back…

We had questions.

First, What Even Is a Scoville?

The Scoville scale dates back to 1912, when pharmacist Wilbur Scoville developed what was essentially a spicy taste test.

Pepper extract was diluted with sugar water and given to human tasters. It kept getting diluted until the tasters could no longer detect the heat. The amount of dilution needed became the pepper’s Scoville Heat Unit, or SHU, rating.

Which means the original Scoville test was basically:

“Still hot?”

Yep.

Adds more sugar water.

“How about now?”

Still hot.

More sugar water.

Science!

Modern testing is much more sophisticated. Laboratories can measure capsaicinoids—the compounds responsible for chile pepper heat—and use those measurements to calculate Scoville Heat Units. So today’s SHU numbers aren’t just some poor group of people sitting around drinking increasingly diluted pepper water.

And to be clear:

Scoville is a legitimate measurement.

Our beef isn’t with the measurement.

It’s with what happens when we treat that measurement as the entire story of how spicy food feels.

So We Sent the Sauces to a Lab

In September 2026, we had seven Secret Aardvark sauces independently tested for Scoville Heat Units.

Here’s what came back:

Those numbers are measurements of the finished sauces as submitted, not the Scoville ratings of the individual peppers used to make them.

Some of this made perfect sense.

Reaper Smoked took the top spot at 13,800 SHU. Red Scorpion followed at 6,990. Those are both four-flame Aardvarks.

No arguments there.

Then things got interesting.

Wait. Serrabanero Is Hotter Than Habanero?!

According to the lab?

Yep.

Serrabanero clocked in at 1,780 SHU, while our flagship Aardvark Habanero came in at 1,690 SHU.

They’re close. Both are three flames on our scale.

But if you’d asked us to line them up based purely on how we experience them?

We probably wouldn’t have put Serrabanero first.

And then there’s Drunken Jerk.

Oh, Drunken Jerk.

But before we get to that particular spicy mystery, there’s something important we need to talk about.

Heat Has a Personality

This is where a single number starts losing some of the plot.

A finished hot sauce isn’t a pepper.

Peppers are mixed with tomatoes, vinegar, vegetables, spices, oil and all the other things that make a sauce a sauce. So the Scoville rating associated with the pepper on the label isn’t necessarily the Scoville rating of the finished bottle you’re pouring all over dinner.

But there’s another layer.

Not all heat feels the same.

Some pepper heat hits you immediately.

Some creeps.

Some builds bite after bite.

Some burns brightly and disappears.

Some moves in, puts its feet on your coffee table and apparently has no intention of leaving.

If you’ve eaten enough hot sauce, you probably already know exactly what we’re talking about.

And two of our hottest Aardvarks are a perfect example.

Same Four Flames. Two Very Different Burns.

People ask us all the time:

Which is hotter: Red Scorpion or Reaper Smoked?

Our answer has always been some version of:

They’re two very different kinds of hot.

We give them both four flames. The lab, however, found a pretty big difference between them: Red Scorpion tested at 6,990 SHU, while Reaper Smoked came in at 13,800 SHU.

And yet those numbers still don’t tell you what it’s like to eat them.

Red Scorpion is a sting.

It comes in quick, hitting toward the tip of your tongue with a sharp, immediate burn.

There’s very little mystery about what’s happening.

Red Scorpion has arrived.

Red Scorpion would like your attention.

But it doesn’t stick around forever. That initial sting starts to fade, and before too long, you’re recovering.

Reaper Smoked is a creep.

Take that first bite and you might notice the flavor and sweetness of the Reaper pepper before you notice much heat.

You may even have a brief, foolish moment of confidence.

This isn’t that hot.

Give it a second.

The heat starts rolling in later, creeping toward the back of your mouth and throat. And unlike that quick Scorpion sting, this one likes to linger.

Then you take another bite.

And another.

And the heat keeps building.

Same four-flame warning. Completely different ride.

Knowing that Reaper Smoked measured almost twice as high as Red Scorpion is useful information.

But knowing how those two heats tend to show up when you eat them might be even more useful when you’re deciding which bottle you want.

And that, really, is why we’ve stuck with our flames for so long.

Scoville Measures the Sauce. Your Mouth Experiences the Food.

And now we arrive at perhaps the weirdest result of the bunch.

Drunken Jerk.

We rate Drunken Jerk three flames.

The laboratory measured it at:

483 SHU.

That’s not only below our other three-flame sauces.

It’s even below Smoky, which we rate at two flames and which tested at 577 SHU.

At first glance, that makes absolutely no sense.

And this is where our longstanding Scoville skepticism started feeling a little more justified.

Not because the lab got it wrong.

Because the number and your mouth aren’t necessarily answering the same question.

Drunken Jerk also isn’t really meant to sit politely on top of your food.

It’s a marinade.

It has more oil in its recipe than many of our other sauces, and it’s made to be cooked with.

You’re putting it on chicken, pork, veggies or whatever else you’ve decided deserves to get drunk and jerked, cooking it into the food, and eating it as part of an entire dish.

Our three-flame rating comes from our experience of the sauce and how its heat presents itself when we actually use it.

The laboratory’s 483 SHU tells us something useful and measurable about the submitted sauce.

But you’re not eating a laboratory sample.

You’re eating dinner.

Scoville measures the sauce. Your mouth experiences the meal.

And we think there’s room for both.

So…Were We Right? Is Scoville Dumb?

Okay.

We’ll amend our previous statement.

Scoville isn’t dumb.

It’s actually pretty fascinating.

It’s standardized. It’s measurable. It gives hot sauce makers and chile nerds a way to quantify capsaicinoid heat instead of just screaming “THIS ONE IS REALLY FREAKING HOT” at each other.

And we’re glad we finally tested ours.

The results taught us something.

But they also reinforced why we’ve never wanted to make a Scoville number the final word on how hot an Aardvark is.

Our flame scale was built to answer a more practical question:

What should you expect when you eat this?

A Scoville number can tell you something about the amount of measurable heat in a sauce.

It can’t tell you exactly where you’ll feel that heat.

It can’t tell you whether it’ll smack you immediately or sneak up from behind.

It can’t tell you whether it’ll disappear quickly or hang around for the next five bites.

And it definitely can’t tell us exactly how your mouth is going to experience it.

So we’re keeping the flames.

But now?

We’ve got some numbers to go with them.

Now We Want Your Mouth Involved

Here’s our proposal.

Forget everything you just read.

Grab a few Aardvarks.

Do not look at the Scoville numbers.

Taste them.

Rank them from mildest to hottest based entirely on what your mouth tells you.

Then come back and look at the lab results.

Does Serrabanero beat Habanero?

Does Smoky really feel hotter than Drunken Jerk?

Can you feel the difference between that quick Red Scorpion sting and the slow-building Reaper?

Or does your mouth have an entirely different ranking?

Because after more than 20 years of making hot sauce, sending seven bottles to a laboratory, and finally getting the Scoville numbers everyone keeps asking us for, we’ve reached a highly scientific conclusion:

Put Aardvark in your mouth.

Then tell us which one you think is hottest.